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physical and personality changes that may occur following a head injury. They may include amnesia, headache, dizziness, difficulty concentrating, restlessness, depression, irritability, sweating, heart palpitations, and insomnia.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
postconcussional syndromeA spectrum of symptoms occurring after what appears to be a relatively minor head injury with brief loss of consciousness and little or no immediate memory loss (retrograde or post-traumatic amnesia). The syndrome includes headache, depression, loss of concentration and the power of attention, memory loss, anxiety, dizziness and low tolerance to noise. These symptoms may persist for a year or longer.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005